The /exit command, before selecting a category, should safely terminate the game session. Right now, the output is incorrect, as you use the command, it informs you that you are leaving the session, but if you use the trivia command again, it says there is an active session created. This creates an infinite loop and breaks the game, as the user can no longer create a new game instance.
When using the /exit command before the category selection, the bot should inform the user that the session is ended and should allow the trivia command to be used correctly then.
User story points: 2